Chemical fire-extinguisher.



PATENTED NOV. 1, 1904.

A. G. STEVENS. CHEMICAL FIRE EXTINGUISHER.

APPLICATION FILED $213.4, 1904.

N0 MODEL,

i lllllllllllllllllll Wait/sic?! UNITED STATEs Patented November 1, 1904.

PATENT OFFICE. A

CHEMICAL FIRE-EVXITINGUIISHER.

SPECIFICATION forming part of LettersPatent Nol 774,116, dated November 1, 1904. '1

Application filed February 4, 1904. Serial No. 192,056. (No model.)

To all whom it may concernr Be it known that I, ALBERT G. STEVENS, a

citizen of the United States, residing at Cape May city, county of Cape May, and State of New Jersey, have invented a certain new and useful Improvement in Chemical Fire-Extinguishers, of which the'following is a specification.

are mixed and. when the water is turned 1 through this portion the chemicals will mix.

I over patent granted to me December 29, 1903,

with the water and be carried out of the machine. r v

This patent is intended as an improvement No. 748,319, for chemical-mixer, 1 1

' sists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claims.

In ordert'hat those skilled in the art to which and operation'will now be described in detail,

- referring to the accompanying drawings,

forming a part of this specification, in which-- Figure 1 is a side elevationof a'truckhaw ing two mixing-chambers located thereon, one being shown in section; Flg. 2; a planv1ew of Fig. 1, one of the mixing-chambers being shown in section, the section belng taken on the line 2 2 of Fig. 1; Fig. 3, a perspective- View of the partition dividing the chemicalchamber from the water-chamber below. Fig. 4, a perspective View of the valve-plug.

A represents the mixing-chambers, which may be either stationary or mounted upon a truck, as shown in the drawings. There may be as many of these mixing-chambers located in a group as desired, all being connected to a pipe B with a common water-supply. Each of the mixing-chambers A is divided horizontally in two parts by the partition C. The space above the partition C, I will call the chemicahchamber, as that is the chamber in which the chemicals are placed through the removable lid D. This lid D is normally securely held in place and will be' packed so the same will be water-tight. The space below the partition C, I will call the water-chamher, as said chamber is always full of'water while the apparatus is being used.

E represents pipes branching from the main supply-pipe B and leading intothe waterchamber of each mixer. The pipes E after entering the chamber extend upward and connect .With'the chemical-chamber through'openings F, formed through the partition C. G is another opening formed throughthe partition C, through which the water entering the chemical-chamber maypass' through into thewater-chamber below, the water. then passing outward through the outlet-pipeH, said outlet-pipe taking its supply from. near the bottom of the water-chamber. The outlet-pipes of each mixer will be merged into one after With these ends in view this invention con-1 leaving the mixers. 7

I is a valve plug passing" horizontally through the partition C, intercepting the holes F and Gr. The valvesplu g is provided with lateral openings J formed therethrough, which may be brought-in or out of register with the openings F and G by turning-the plug.

K is a small opening through the 'upper portion of the valve-casing, and in the end of the plug-valve is located aport'L, which extends from the side of said plug-valve out-- ward through the end of the'same, and as the end of the plug-valve extend's 'outside of the casing of the mixer when the portL is brought intoregister with the opening K any water .in thechemical-chamber Will flow outward through the opening Kand port L to the exterior of the machine. The port L'is so located that it is only in register with the opening K when the openings J are out of register with the openings F and G.

E is a contracted opening from the pipe E, opening directly into the water-chamber.

The operation of the device is as follows: Water being turned into the supply-pipe B, said water will flow through the pipes E, and part of the Water will issue from the opening E into the water-chamber and part will flow upward through the chemical-chamber into the water-chamber,and the water will flow outward through the outlet-pipe H. In order to recharge the mixer, the plug I is turned onequarter revolution, which will close ofl the supply of water to the chemical-chamber and allow the water to drain out of the chemicalchamber through the port L. Then the lid D is opened and the chemical-chamber filled with the proper chemicals. Then the plug I'is turned back so that the openings J will register with the openings F and G. Then a certain amount of Water will pass upward through the chemical-chamber, carrying part of the chemicals with it, so that the water issuing from the outlet-pipe H will be charged with the proper supply of chemical. Water flowing through the chemical-chamber may be regulated by the valve I.

The reason for having two or more mixers in one apparatus is for the purpose of having the water always flowing through a chemically-charged chamber, for while the water is taking chemical from the chamber of one mixer the water may be turned off from the chemical-chamber of another mixer and this chamber charged, so that by the time one chamber is empty another is reached to be turned on.

Of course I do not wish to be limited to the exact construction here shown, as slight modifications could be made without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is 1. In a fire-extinguishing apparatus, a casingdivided horizontally into the two chambers, the upper chamber provided with a removable cover adapted to be normally hermetically sealed in place, a water-supply pipe leading into the upper chamber, a port formed through the partition dividing the two chambers, a valve for opening or closing said port, and'at the same time opening or closing the watersupply to the upper chamber, the supply-pipe also opening through a contracted opening into the lower chamber, an outlet-pipe leading from the lower chamber, and a valve for draining the Water from the upper chamber when the water-supply is cut off from the same, as and for the purpose specified.

2. In a chemical fire-extinguishing apparatus consisting of two or more mixing-reservoirs, each mixing-reservoir consisting of a casing divided horizontally by a partition into two chambers, the upper chamber provided with a removable cover through which the chemicals may be inserted, said cover adapted to be normally held closed against the egress of water, a common supply-pipe, branch pipes leading from said supply-pipe into the lower chamber of each reservoir and opening into said lower chamber through a contracted open- "ing, said branch pipes also extending upward and opening into the upper chamber through a supply-port formed through the partition, an outlet-port also formed through a partition connecting the upper and lower chambers, a valve adapted to open or close both of said ports at the same time, a valve for draining the water from the upper chamber to the exterior of the reservoir when the ports in the partition are closed, and an outlet-pipe leading from the lower chamber of each reservoir, as and for the purpose specified.

3. A chemical fire-extinguishing apparatus consisting of two or more mixingreservoirs, each mixing-reservoir consisting of a casing divided horizontally into two chambers, the upper end of the upper chamber being open and normally closed water-tight by a removable cover, a valve-casing formed through the partition, a plug-valve fitted within the valvecasing, a common supply-pipe, branch pipes leading from said supply-pipe into the lower chamber of each of the reservoirs and opening into said chamber through a contracted opening, said pipes also extending upward and connecting with ports formed through the valve-casing in the partition, said valve-casings also provided with other ports adapted to connect the chemical-chamber with the water-chamber, openings provided through the valve-plug in the valve-casing adapted to be brought in and out of register with the ports of the valve-casing, and aport extending from the side of the valve-plug through the end of the same to the exterior of the reservoir, said port adapted to be brought in register with the port connecting with the upper chamber when the valve-plug is turned so as toclose tight;l other ports, as and for the purpose speci- In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

ALBERT G. STEVENS.

Witnesses:

' CLIFFORD D. VVALTERs,

GEORGE SANDGRAN. 

